Gauge: 15 sts x 21 rows in stockinette st = 10 x 10 cm.

Knitting tips (for neckband):
Dec inside of 6 buttonband sts knit as follows on right side from edge: K 2 (garter st), K 1, P 1, K 1, P 1. Dec 1 st as follows:
After 6 edge sts: Slip 1 st as if to knit, K 1, psso.
Before 6 edge sts: K 2 tog.

Rib: * K 1, P 1 *, repeat from * - *.

Pattern: See the chart. The chart shows Patterns 1A (M.1A), 1B (M.1B) and 1C (M.1C). The patterns are seen from the right side. «54 p/v = ca 26 cm»: 54 rows = approx. 26 cm.

= knit on right side, purl on wrong side
= K 2 tog, yo
= yo, slip 1 as if to knit, K 1, psso
= yo, slip 1 as if to knit, K 2 tog, psso, yo

Back: Cast on 61-67-73-83-91 sts around 2 needles (so that the cast-on edge will be elastic). Pull out one needle and P 1 row (wrong side). Then knit 4 rows rib, keeping 1 edge st at each side in garter st and begin rib with P 1. Change to stockinette st.
When the piece measures 3 cm establish the pattern on the next row as follows (right side row): K 1 (edge st knit in garter st), 0-3-2-3-3 sts stockinette st, Pattern 1A (= 5 sts), Pattern 1B over the following 48-48-56-64-72 sts, Pattern 1C (= 6 sts), 0-3-2-3-3 sts stockinette st, K 1 (edge st knit in garter st). Continue in pattern as established until piece measures 34-35-36-37-38 cm – adjust so that you end after you complete one of the lace patterns in the pattern – then knit stockinette st to finished measurements.
When the piece measures 9-9-9-13-13 cm inc 1 st at each side every 9-9-9-13-13 cm a total of 3-3-3-2-2 times = 67-73-79-87-95 sts – knit the increased sts in stockinette st.
When the piece measures 35-36-37-38-39 cm bind off for armhole at each side every other row: 3 sts 1 time, 2 sts 1-1-2-3-4 times and 1 st 1-3-3-5-7 times = 55-57-59-59-59 sts.
When the piece measures 50-52-54-56-58 cm knit 4 rows with rib over the center 23-23-25-25-25 sts – start and end the rib with P 1 (knit the remaining sts in stockinette st as before), then bind off the center 11-11-13-13-13 sts for the neck in rib. Dec 1 st at each neck edge every other row 2 times – see knitting tips above = 20-21-21-21-21 sts remain on each shoulder. Bind off, the piece measures approx. 54-56-58-60-62 cm.

Right front: Cast on 36-40-44-48-52 sts around 2 needles (so that the cast-on edge will be elastic). Pull out one needle and P 1 row (wrong side). Then knit 4 rows rib as follows from center front edge: K 2 (edge sts knit in garter st), * K 1, P 1 *, repeat from * - * and finish with K 1 and K 1 (edge st knit in garter st). Then knit stockinette st but keep the outermost 6 sts at the center front as before to finished measurements (= buttonband).
Read the entire next section before knitting:

Pattern: When the piece measures 3 cm knit the next row as follows from center front edge (seen from the right side): K 2 (edge sts knit in garter st), K 1, P 1, K 1, P 1 (= buttonband), 2-3-0-3-0 sts stockinette st, Pattern 1A (= 5 sts), Pattern 1B over the following 16-16-24-24-32 sts, Pattern 1C (= 6 sts), 0-3-2-3-2 sts stockinette st and K 1 (edge st knit in garter st). Continue in pattern as established until piece measures 34-35-36-37-38 cm – adjust as on back – then knit stockinette st to finished dimensions.
Side inc: When the piece measures 9-9-9-13-13 cm increase at the side as on back.
Neckband: When the piece measures 28-29-30-31-32 cm dec 1 st at center front edge for neck every other row – see knitting tips above: 3-4-6-3-2 times and every 4 rows: 10-10-10-12-13 times. Bind off the sts in pattern or in stockinette st, as appropriate.
Armhole: When the piece measures 35-36-37-38-39 cm bind off for armhole at the side as on back.
After all incs and decs are complete 20-21-21-21-21 sts remain on shoulder. Continue in stockinette st with the 6 outermost sts at the center front edge as before. Bind off when the piece measures 54-56-58-60-62 cm.

Left front: Cast on and knit the same as the right reversing shaping.

Sleeve: Cast on 39-39-41-41-45 sts around 2 needles. Pull out one needle and knit 4 rows garter st. Then knit stockinette st, keeping 1 st at each edge in garter st.
When the piece measures 12 cm knit the next row as follows (right side row): K 1 (edge st knit in garter st), 1-1-2-2-0 sts stockinette st, Pattern 1A (= 5 sts), Pattern 1C over the following 24-24-24-24-32 sts, Pattern 1C (= 6 sts), 1-1-2-2-0 sts stockinette st and K 1 (edge st knit in garter st).
Continue in pattern as established. When the piece measures 14-14-14-14-12 cm inc 1 st at each side every 5.5-4-3.5-3-3 cm a total of 7-9-10-11-11 times = 53-57-61-63-67 sts – knit the increased sts in stockinette st.
When the piece measures approx. 40 cm, end lace pattern and knit stockinette st to finished measurements.
When sleeve measures 49-49-48-46-45 cm bind off for sleeve cap at each side every other row: 3 sts 1 time, 2 sts 2-2-2-3-4 times and 1 st 1-2-3-5-6 times, continue to bind off 2 sts at each side until the piece measures 55-56-56-57-58 cm, then bind off 3 sts 1 time at each side. Bind off remaining sts, the piece measures approx. 56-57-57-58-59 cm.

Assembly: Sew shoulder seams. Sew in sleeves. Sew sleeve and side seams using edge sts as a seam allowance.

Crocheted edge: Crochet 1 row of ch-loops around lower edge of each sleeve and along both fronts and around neckband as follows: 1 sc in first st, * ch 3, skip over approx. 2.5 cm, 1 sc in the next st *, repeat from * - *.

Sew on buttons. Use ch-loops on the crocheted edge for buttonholes.